Half to john m



(No Model.)

H, T. v/'EIRBAUHv MACHINE FOR TURNING SPIRALS..

Patented Feb. ,22, 188.7.

YEUX

Suva/nto@ '75M l Nrrnn i STATES ATENT OFFICE..

HENRY T. 'VEIRBAGH, OE ALLEN TOWN PENNSYLVANIA, ASSIGNOR OE ONE- HALF TO JOHN M. STEVENS, OF SAME PLACE.

MACHINE FOR TURNING SPlRALS.

SPECIFXCATION forming part of Letters Patent No. 358,176, dated February 22, 1887.

Application filed Jul y 22, 1886.

To all whom, it may concern:

Be it known that l, HENRY T. WnIRBAoH, a citizen of the United States, residing at Allentown, in the county of Lehigh and State of Pennsylvania, have invent-ed a new and useful Improvement in Machines for Turning Spirals, of which the following is a specification.

My invention relates to machines for cutting twist or rope moldings and other forms.

The object of my invention is to produce a machine w-hich shall be capable of working both forward and backward, and in which the cutter shall always cut with the grain of the wood, so as to avoid tearing the wood.

A further object of theinvention is to produce a machine in which the required adjustment of certain parts may be effected with ease and certainty and without necessitating the removal of such parts.

To the above purposes my invention consists in certain peculiar and novel features of construction and arrangement, as hereinafter described and'claimed.

In order that my invention may be fully understood, I will proceed to describe it with reference to the accompanying` drawings, in which* i Figure-1 is a front elevation of my improved molding-machine. Fig. 2 is a detached view of the cutter-head frame.- Eig. 3 is a detached View ofthe cutter-head. Fig. 4 is a detached View of the division-platefor spacing the twist.

In the said drawings, A designates the bed of the machine, which is supported at its ends by suitable legs or standards, ci a, as shown.

B designates the drum, which is mounted horizontally beneath the bed A upon a countershaft, b, the bearings of which are in the upper ends of pedestals b', and also in the standards o.

bl b3 designate, respectively, a fast and a loose pulley, which are mounted upon the shaft b, contiguous to the standard c, and receive the belt from the line shafting or motor, as required.

Upon the outer side of the standard c is mounted an L-shaped extension-frame, C, in the upper end of which is journaled one end of a shaft, D, the opposite end of said shaft being journaled in the upper part of the said standard a. The shaft b extends beyond the standard a', and carries two pulleys, b4 b5, as shown.

Seria-l No, 208.796, (No model.)

l Upon the shaft D are mounted a large pulley, d, and a smaller pulley, d', both of which movement of pulley d being opposite to that of pulley d. Thesepulleys are driven by suitable belts from the pulleys b4 b5, the belt from pulley b* to pulley c/ being crossed to give the as compared with the movement of pulley d.

d? designates a clutch, which is splined upon shaft D, between the pulleys d d', and the clutch ends of which are moved into engagesaid shaft D, the hubs of said pulleys being formed with clutch-surfaces upon their inner ends, as shown.,

E designates the screw .which drives the screw extending the full length of bed A upon its front side. Upon one end of this screw is mounted a gear-pinion, e, which meshes with a similar pinion, a, mounted upon a stubupper part of standard a. This pinion a2 meshes in turn with a pinion, d, which is mounted rigidly upon the shaft D.

The clutch d* is operated by a shipper-bar,

porting-bar, cextending outwardly from the standard c. 'To the upper end of the shipper-bar d* is pivoted one end of a rod, d5, which extends longitudinally across the front of the the other pulley, d or d', on the shaft D, as the case may be.

From the above description it will be seen that when the clutch is moved into engagewill be rot-ated in one direction, while when the clutch is shifted into vengagement with the smaller pulley, d', the screw E will be rotated in the opposite direction and at a greater run loosely upon said shaft, the direction of required reverse movement to said pulley d 6o ment with one or the other pulleys d d upon 55 head-block, as hereinafter described, the said 7o shaft, c3, which projects outward from the d4, which is pivoted at its lower end to a sup- 8o bed A, being supported by and sliding in The carriage H, as it is reciprocated on oo gagement with one and into engagement with ment with the larger pulley, "d, the screw E IOJ speed than thatimpartcd by the larger pulley, d. The larger pulley drives the screw during the operation ofcutting, while the smaller pnlley reverses the screw in order to bring the kheadblock back to the startingpoint.

Fdesignatcs the head-stock, Gthe tailstock, and H the carriage for the head block or frame I. These several parts, excepting the head-stock, slide longitudinally ofthe hed A in suitable guides thereon in the usual or any preferred manner, the carriage H having a nut, l1, which embraces the screw E, and by means of which the carriage is fed up to its work.

The shaft f of the headestoek carries the usual chuck, f", at its front end, and at its rear end said shaft carries a large gear-wheel,f', which meshes at times with a gear-pinion, a, and also with a gearpinion, u, the latter be' ing driven by a geanpinion, c, upon the con responding end of screw E. The gear-wheel f s mounted loosely upon the head-stock shaftf, and is connected by a pin,f3, with the division-platef, which isalso loosely mounted upon said shaftf. f5 designates an arin,which is rigidly mounted upon shaftf so as to turn therewith, said arm extending radially outward from shaft in front of the division-plate j". At its outer end the arm f5 cai'ries a springbar,f, whichis pivotally connected to the arm f5 at one end, and at the other eind carries a pin, f7, by which said bar is connected to the divisiouplatefin the following manner: This division-plate is provided ou its front face with six concentric annular grooves, f8. The

rst or inner groove is blank; the second grooveis provided with two holes f", the third groove with three holes, and so on to the sixth or outer groove, which has six holes f, the said holes in all ofthe grooves being equidistant, as shown. By virtue of this arrangement the position ofthe piece of wood to be cut can be varied relative to the cutter in the headblock, so as to properly space the twist by placing the pin f7 in one or another of the holes f. By forming the division-plate with a number of grooves each having its set of apertures the most delicate adjustment can be obtained in spacing the beads to be cut.

The centering-spindle g of the tail-stock G is adjusted longitudinally in said stock by means of a screw, g', passing through an extension, g, of said spindle and working in the frame g of the stock, said screw being oper,- ated by a hand-wheel, g, as shown.

I designates the cutter-head frame, which is moved laterally in suitable slides upon the carriage II by a screw, h. so as to bring the cutters properly up to their work.

'L' designates the cutter-shaft, which is suitably journalcd in frame I, and which carries a pulley, t', at its rear end, a belt, j, ruiming over said pulley and under the drum B, to drive the cutter-shaft.

K designates the cutter-head, which is a rectangular block having a socket, c, in one end to receive the front end of the cuttershaft, and having its opposite end cut away on its upper sideand a movable block. k', adjustably secured thereon by means of a setserew, it, by means of which it is clamped down upon the cutter. A set-screw, 7a2, serves to clamp the cutter-head to its shaft t, and the set-screw la serves, as stated, to hold the clamping-block k firmly down upon the Cutter, holding the cutter firmly in its operative position. The form of the cutter will vary according to the work to be done, and in any given instance may be of the usual or anypreferred style.

It will thus be seen that the machine is simple and durable in construction and capable of operating in either direction, as desired. The adjustments mentioned in the foregoing description can all be easily and rapidly made without necessitating the removal of any of the parts involved in such adjustments.

Having thus described my in vcntion, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the cutter-head shaft, of the cutter-head K, circular in crosssection, formed with the central longitudinal socket lo* in one of its ends, and having its other end cut away on its upper side, as shown, to forni the shoulder, the set-screw 7c, extending into the said socket, the clampingblock 7c', and the set-screwk, for adjusting the said block, as set forth.

2. 'Ihe combination, with the main bed.- franie, of the drive-shaft carrying the pulleys at each end, the head-bloek, the screw operating the same and carrying a pinion at each of its ends, the clutch-shaft provided with the pinion and the clutch mechanism and having the pulleys loosely mounted upon it, the intermediate pinion, the headstock shaft carrying the loosely-mounted' gear-wheel,and the loosely-mounted division-plate connected to and turning with the said gearwheel and formed with a series of grooves and equidistant apertures, the fixed arm, the spring-bar pivoted to the arm at its outer end, and provided with the end pin engaging with one of the said apertures, and the pinions interposed between the gear-wheel and the pinion on that end of the operating-screw, .substantially as described, for the purpose set forth.

In testimony that I claim the foregoing as my own Ihave hereto affixed my signature in presence of two witnesses.

:u naar T. wEIRBAoH.

`Wi tnesses:

T. F. Knox, O. PFEIFFER.

IIO 

